why can't a housefly find its way out of a window???

Okay, here's my attempts to answer...
Because it's doing a screen test.
Because it likes being a pane.
Because it's being sill-ee.
Because its lived a shuttered life.
Because the reception is bad .
(Get it? It's adjusting the antennae)
Because it's a dead winger.
Because it's busy playing wing awound the wosie.
Umm...
Okay, I'll shaddup now..
Lou